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Air Oil Separator (AOS-R) Kit, Subaru 02-21 - Radium

Manufacturer: Radium Engineering
SKU: RA-AOS-R-SUB
497.07 EUR
Incl. 21% VAT (Netherlands) | Change

Air Oil Separator (AOS-R) Kit, Subaru 02-21

High-powered modified Subaru engines tend to generate excessive blow-by oil and gasses. In these cases, an ordinary small catch can quickly fill with oil and not be adequate.

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Air Oil Separator (AOS-R) Kit, Subaru 02-21

High-powered modified Subaru engines tend to generate excessive blow-by oil and gasses. In these cases, an ordinary small catch can quickly fill with oil and not be adequate. Like the Radium Engineering Subaru Dual Catch Can Kit, the AOS (Air Oil Separator) kit is responsible for keeping blow-by oil and other pollutants out of the intake pipe, manifold, turbocharger, and intercooler during all engine loads. The main difference is that an AOS-"R" system "returns" what is collected back into the oil pan so there is no servicing required. The built-in heater keeps water from condensing in the AOS. And because water is denser than oil, there is an integrated water trap found around the bottom perimeter of the can.

This prevents water from descending into the oil pan if ever-present. Furthermore, because the water is trapped against the heater, it will eventually boil and evaporate out of the system. The AOS is constructed of three CNC machined sections that screw together and are sealed with O-rings.

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COMPATIBILITY

20-0207-02 
02-07 Subaru Impreza WRX
02-07 Subaru Impreza WRX STi
04-08 Subaru Forester XT
05-06 Saab 9-2X Aero

20-0607 
09-13 Subaru Forester XT
08-14 Subaru Impreza WRX
08-14 Subaru Impreza WRX STi
15-21 Subaru WRX STi

Measurements

  • AOS Height: 6.94" (top of dipstick to bottom of AOS)
  • AOS Diameter: 3.45" Round
  • AOS Capacity: 20.3 oz (600mL)

Benefits

  • Effectively raises the octane and increases engine performance with cleaner inlet air
  • Prevents oil buildup in the intake or intercooler system walls, throttle body, intake manifold, etc.
  • Lowers hydrocarbon emissions

Included

  • Machined aluminum Radium Engineering Air Oil Separator
  • Subaru specifically designed mounting bracket
  • All necessary SAE J30R7 rated PCV/Emissions hose
  • Coolant hoses and fittings
  • All necessary aluminum fittings and hose-ends
  • Stainless steel mounting hardware

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*For 02-05 Subarus with a cable-actuated throttle body, our Cruise Control Relocation Bracket must be used.
*If operated in freezing environments, Radium Engineering recommends installing insulation sleeving (not included) over any hose exposed to cold airflow. This will help prevent the natural phenomenon of water condensation freezing and potentially clogging the hose. 
*For RHD vehicles, our Universal AOS-R must be used for custom mounting and plumbing.
*The Radium AOS-R kit may not be compatible with all other aftermarket products. 

Products specifications
Product TypeEngine & Powertrain
Year2001-2006 (STi - SF and SG; 2GEN), 2009-2013 (SH; 3rd GEN), 2015-2017 (WRX FA20 S), 2002-2007 (WRX/STI Wi)
MakeSubaru, Subaru, Subaru, Subaru
ModelImpreza, Impreza, Forester, Forester

At CBS Racing, happy and satisfied customers are our top priority.

We do not hide behind supplier or manufacturer warranty statements like: "No warranty on racing products". This is not okay! There must be a guarantee and a warranty on all products sold - they must work and fit your car as advertised.

We take great care in selecting what we sell and what we install on our build- and customer cars. So you can rest assured we got your back, and we will not leave you stranded with a bad or broken part.

At CBS Racing, we strive to be the first shop of choice for our fellow car enthusiasts!
And we plan to do that by taking care of our customers the way they deserve and deliver 110% service, always!

Thanks for trusting us!

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